[PATCH ipmi/kcs_bmc v4] ipmi: kcs_bmc: make the code be more clean

From: Haiyue Wang
Date: Thu Feb 22 2018 - 01:22:14 EST

Next message: Jason Wang: "[PATCH net v2 1/2] Revert "tuntap: add missing xdp flush""
Previous message: Rajendra Nayak: "Re: [PATCH v4 3/4] arm64: dts: sdm845: Add minimal dts/dtsi files for sdm845 SoC and MTP"
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Modify the file read and write operation API's parameter declaration to
meet the name convention.

Rename the helper function by following the to_<xxx>() name style.

Update the poll API with the new type '__poll_t', this is new commit from
linux-4.16-rc1.

Correct the header file's comment style for 'SPDX-License-Identifier'.

Correct the header file's macro defination end comment which is old file
name.

Remove the space between the comment words and colon by referring other
modules.

Signed-off-by: Haiyue Wang <haiyue.wang@xxxxxxxxxxxxxxx>
---
v3 -> v4:
- Correct the header file's macro defination end comment which is old
file name, I forgot to change it after changing the file name.
- Remove the space between the comment words and colon by referring
other modules.

v2 -> v3:
- Make the commit message be more understandable.

v1 -> v2:
- Add 'SPDX-License-Identifier' style for header files modification.
---
drivers/char/ipmi/kcs_bmc.c | 32 +++++++++++++++++---------------
drivers/char/ipmi/kcs_bmc.h | 36 +++++++++++++++++++-----------------
drivers/char/ipmi/kcs_bmc_aspeed.c | 4 +++-
include/uapi/linux/ipmi_bmc.h | 8 +++++---
4 files changed, 44 insertions(+), 36 deletions(-)

diff --git a/drivers/char/ipmi/kcs_bmc.c b/drivers/char/ipmi/kcs_bmc.c
index 6476bfb..fbfc05e 100644
--- a/drivers/char/ipmi/kcs_bmc.c
+++ b/drivers/char/ipmi/kcs_bmc.c
@@ -1,5 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
-// Copyright (c) 2015-2018, Intel Corporation.
+/*
+ * Copyright (c) 2015-2018, Intel Corporation.
+ */

#define pr_fmt(fmt) "kcs-bmc: " fmt

@@ -242,14 +244,14 @@ int kcs_bmc_handle_event(struct kcs_bmc *kcs_bmc)
}
EXPORT_SYMBOL(kcs_bmc_handle_event);

-static inline struct kcs_bmc *file_to_kcs_bmc(struct file *filp)
+static inline struct kcs_bmc *to_kcs_bmc(struct file *filp)
{
return container_of(filp->private_data, struct kcs_bmc, miscdev);
}

static int kcs_bmc_open(struct inode *inode, struct file *filp)
{
- struct kcs_bmc *kcs_bmc = file_to_kcs_bmc(filp);
+ struct kcs_bmc *kcs_bmc = to_kcs_bmc(filp);
int ret = 0;

spin_lock_irq(&kcs_bmc->lock);
@@ -262,25 +264,25 @@ static int kcs_bmc_open(struct inode *inode, struct file *filp)
return ret;
}

-static unsigned int kcs_bmc_poll(struct file *filp, poll_table *wait)
+static __poll_t kcs_bmc_poll(struct file *filp, poll_table *wait)
{
- struct kcs_bmc *kcs_bmc = file_to_kcs_bmc(filp);
- unsigned int mask = 0;
+ struct kcs_bmc *kcs_bmc = to_kcs_bmc(filp);
+ __poll_t mask = 0;

poll_wait(filp, &kcs_bmc->queue, wait);

spin_lock_irq(&kcs_bmc->lock);
if (kcs_bmc->data_in_avail)
- mask |= POLLIN;
+ mask |= EPOLLIN;
spin_unlock_irq(&kcs_bmc->lock);

return mask;
}

-static ssize_t kcs_bmc_read(struct file *filp, char *buf,
- size_t count, loff_t *offset)
+static ssize_t kcs_bmc_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
{
- struct kcs_bmc *kcs_bmc = file_to_kcs_bmc(filp);
+ struct kcs_bmc *kcs_bmc = to_kcs_bmc(filp);
bool data_avail;
size_t data_len;
ssize_t ret;
@@ -339,10 +341,10 @@ static ssize_t kcs_bmc_read(struct file *filp, char *buf,
return ret;
}

-static ssize_t kcs_bmc_write(struct file *filp, const char *buf,
- size_t count, loff_t *offset)
+static ssize_t kcs_bmc_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
{
- struct kcs_bmc *kcs_bmc = file_to_kcs_bmc(filp);
+ struct kcs_bmc *kcs_bmc = to_kcs_bmc(filp);
ssize_t ret;

/* a minimum response size '3' : netfn + cmd + ccode */
@@ -378,7 +380,7 @@ static ssize_t kcs_bmc_write(struct file *filp, const char *buf,
static long kcs_bmc_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
- struct kcs_bmc *kcs_bmc = file_to_kcs_bmc(filp);
+ struct kcs_bmc *kcs_bmc = to_kcs_bmc(filp);
long ret = 0;

spin_lock_irq(&kcs_bmc->lock);
@@ -410,7 +412,7 @@ static long kcs_bmc_ioctl(struct file *filp, unsigned int cmd,

static int kcs_bmc_release(struct inode *inode, struct file *filp)
{
- struct kcs_bmc *kcs_bmc = file_to_kcs_bmc(filp);
+ struct kcs_bmc *kcs_bmc = to_kcs_bmc(filp);

spin_lock_irq(&kcs_bmc->lock);
kcs_bmc->running = 0;
diff --git a/drivers/char/ipmi/kcs_bmc.h b/drivers/char/ipmi/kcs_bmc.h
index c19501d..eb9ea4c 100644
--- a/drivers/char/ipmi/kcs_bmc.h
+++ b/drivers/char/ipmi/kcs_bmc.h
@@ -1,31 +1,33 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (c) 2015-2018, Intel Corporation.
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2015-2018, Intel Corporation.
+ */

#ifndef __KCS_BMC_H__
#define __KCS_BMC_H__

#include <linux/miscdevice.h>

-/* Different phases of the KCS BMC module :
- * KCS_PHASE_IDLE :
+/* Different phases of the KCS BMC module.
+ * KCS_PHASE_IDLE:
* BMC should not be expecting nor sending any data.
- * KCS_PHASE_WRITE_START :
+ * KCS_PHASE_WRITE_START:
* BMC is receiving a WRITE_START command from system software.
- * KCS_PHASE_WRITE_DATA :
+ * KCS_PHASE_WRITE_DATA:
* BMC is receiving a data byte from system software.
- * KCS_PHASE_WRITE_END_CMD :
+ * KCS_PHASE_WRITE_END_CMD:
* BMC is waiting a last data byte from system software.
- * KCS_PHASE_WRITE_DONE :
+ * KCS_PHASE_WRITE_DONE:
* BMC has received the whole request from system software.
- * KCS_PHASE_WAIT_READ :
+ * KCS_PHASE_WAIT_READ:
* BMC is waiting the response from the upper IPMI service.
- * KCS_PHASE_READ :
+ * KCS_PHASE_READ:
* BMC is transferring the response to system software.
- * KCS_PHASE_ABORT_ERROR1 :
+ * KCS_PHASE_ABORT_ERROR1:
* BMC is waiting error status request from system software.
- * KCS_PHASE_ABORT_ERROR2 :
+ * KCS_PHASE_ABORT_ERROR2:
* BMC is waiting for idle status afer error from system software.
- * KCS_PHASE_ERROR :
+ * KCS_PHASE_ERROR:
* BMC has detected a protocol violation at the interface level.
*/
enum kcs_phases {
@@ -54,9 +56,9 @@ enum kcs_errors {
};

/* IPMI 2.0 - 9.5, KCS Interface Registers
- * @idr : Input Data Register
- * @odr : Output Data Register
- * @str : Status Register
+ * @idr: Input Data Register
+ * @odr: Output Data Register
+ * @str: Status Register
*/
struct kcs_ioreg {
u32 idr;
@@ -103,4 +105,4 @@ static inline void *kcs_bmc_priv(struct kcs_bmc *kcs_bmc)
int kcs_bmc_handle_event(struct kcs_bmc *kcs_bmc);
struct kcs_bmc *kcs_bmc_alloc(struct device *dev, int sizeof_priv,
u32 channel);
-#endif
+#endif /* __KCS_BMC_H__ */
diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c
index 0c4d1a3..dba6075 100644
--- a/drivers/char/ipmi/kcs_bmc_aspeed.c
+++ b/drivers/char/ipmi/kcs_bmc_aspeed.c
@@ -1,5 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
-// Copyright (c) 2015-2018, Intel Corporation.
+/*
+ * Copyright (c) 2015-2018, Intel Corporation.
+ */

#define pr_fmt(fmt) "aspeed-kcs-bmc: " fmt

diff --git a/include/uapi/linux/ipmi_bmc.h b/include/uapi/linux/ipmi_bmc.h
index 2f9f97e..1670f09 100644
--- a/include/uapi/linux/ipmi_bmc.h
+++ b/include/uapi/linux/ipmi_bmc.h
@@ -1,5 +1,7 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (c) 2015-2018, Intel Corporation.
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2015-2018, Intel Corporation.
+ */

#ifndef _UAPI_LINUX_IPMI_BMC_H
#define _UAPI_LINUX_IPMI_BMC_H
@@ -11,4 +13,4 @@
#define IPMI_BMC_IOCTL_CLEAR_SMS_ATN _IO(__IPMI_BMC_IOCTL_MAGIC, 0x01)
#define IPMI_BMC_IOCTL_FORCE_ABORT _IO(__IPMI_BMC_IOCTL_MAGIC, 0x02)

-#endif /* _UAPI_LINUX_KCS_BMC_H */
+#endif /* _UAPI_LINUX_IPMI_BMC_H */
--
2.7.4

Next message: Jason Wang: "[PATCH net v2 1/2] Revert "tuntap: add missing xdp flush""
Previous message: Rajendra Nayak: "Re: [PATCH v4 3/4] arm64: dts: sdm845: Add minimal dts/dtsi files for sdm845 SoC and MTP"
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